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Home > Success Center > Network Performance Monitor (NPM) > Packet loss and latency values in NetPath

Packet loss and latency values in NetPath

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Created by Anthony.Rinaldi_ret, last modified by Eric Bryant on Jul 12, 2017

Views: 39 Votes: 0 Revisions: 5

Overview

The packet loss and latency values you see in NetPath likely will not match those values elsewhere in Orion, for example on a Node Details page. 

Environment

  • NPM 12.0 and 12.0.1

Detail

In the inspector panel, NetPath reports the latency, packet loss, and other performance metrics as they relate to that network path. The probe of a network path to a router will have a certain latency. Elsewhere in Orion, the latency value comes from the main or assigned poller to that node, which is a different path.

Also, Orion uses different probing packets to measure latency and packet loss. NPM typically uses ICMP packets. NetPath uses TCP packets with a specified port as probing packets. When packets traverse the path, networking devices could process ICMP and TCP packets differently, which may result in different latency.

 

 

 

 

 

Last modified
15:11, 12 Jul 2017

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